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Dry Ice on Mars

WATCH: 'Snowboarding' On Mars?

The Huffington Post | Posted 06.12.2013 | Science

Mysterious markings have been spotted on Martian sand dunes, but where did they come from? Planetary scientists now say that blocks of dry ice probabl...

This Is Not What You Think It Is -- It's Cooler

The Huffington Post | Dean Praetorius | Posted 11.26.2011 | Green

This isn't one of those really, really, really magnified images. It's a Martian landscape. The shot (which looks like a moldy, spotted piece of ...